Hypericum myrtifolium

Hypericum myrtifolium, the myrtleleaf St. Johnswort,[3] is a species of flowering plant in the St. John's wort family, Hypericaceae.[4] It is endemic to the Southeastern United States.[4] It was first described by Jean-Baptiste Lamarck in 1797.[1]

Hypericum myrtifolium
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Hypericaceae
Genus: Hypericum
Section: H. sect. Myriandra
Subsection: H. subsect. Brathydium
Species:
H. myrtifolium
Binomial name
Hypericum myrtifolium
Synonyms[2]
  • Brathydium myrtifolium (Lam.) K.Koch
  • Hypericum glaucum Michx.
  • Hypericum rosmarinifolium Choisy
  • Hypericum sessiliflorum Willd. ex Spreng.
  • Myriandra glauca (Michx.) Spach

Description

Myrtleleaf St. John's wort is a small, erect shrub or subshrub growing up to 1 m (3 ft 3 in) tall.[4] The stems are glaucous and green when young, becoming reddish brown with greyish bark, corky, or peeling in strips as it ages. The sessile, leathery leaves are evergreen, usually glaucous underneath, 8–40 mm (0.31–1.57 in) long and 5–20 mm (0.20–0.79 in) broad, oblong to lanceolate with recurved margins as they dry. The branching flowerheads produce 7–30 flowers in a dichasium arrangement. Each flower grows up to 25 mm (0.98 in) in diameter with 5 persistent sepals, 5 bright yellow petals, and around 200 stamens.[4] It flowers in the late spring to summer (May–July).[5] The ovary is three- or four- parted, separating at the top as it ripens, producing blackish-brown seeds.[4]

Hypericum myrtifolium is distinguished from the similar H. frondosum by its shorter, usually clasping leaves, its broadly branching dichasial flowerheads, and its persistent sepals.[5]

Distribution and habitat

Hypericum myrtifolium occurs in wet pine flatwoods, graminoid bogs, roadside ditches, and other wetland areas with sandy or peaty soils.[4] It is endemic to the coastal plain in the Southeastern United States, found in most of Florida and parts of South Carolina, Georgia, Alabama, and Mississippi.[5]

gollark: I doubt the second part is true.
gollark: People that have iPhones: buy sensible phones.
gollark: Yes; it's *very hard* to go around editing the FS API such that other stuff isn't affected.
gollark: ```pythonfrom requests_futures.sessions import FuturesSessionimport concurrent.futures as futuresimport randomtry: import cPickle as pickleexcept ImportError: import pickletry: words_to_synonyms = pickle.load(open(".wtscache")) synonyms_to_words = pickle.load(open(".stwcache"))except: words_to_synonyms = {} synonyms_to_words = {}def add_to_key(d, k, v): d[k] = d.get(k, set()).union(set(v))def add_synonyms(syns, word): for syn in syns: add_to_key(synonyms_to_words, syn, [word]) add_to_key(words_to_synonyms, word, syns)def concat(list_of_lists): return sum(list_of_lists, [])def add_words(words): s = FuturesSession(max_workers=100) future_to_word = {s.get("https://api.datamuse.com/words", params={"ml": word}): word for word in words} future_to_word.update({s.get("https://api.datamuse.com/words", params={"ml": word, "v": "enwiki"}): word for word in words}) for future in futures.as_completed(future_to_word): word = future_to_word[future] try: data = future.result().json() except Exception as exc: print(f"{exc} fetching {word}") else: add_synonyms([w["word"] for w in data], word)def getattr_hook(obj, key): results = list(synonyms_to_words.get(key, set()).union(words_to_synonyms.get(key, set()))) if len(results) > 0: return obj.__getattribute__(random.choice(results)) else: raise AttributeError(f"Attribute {key} not found.")def wrap(obj): add_words(dir(obj)) obj.__getattr__ = lambda key: getattr_hook(obj, key)wrap(__builtins__)raise __builtins__.quibble()```
gollark: table.deepcopy, table.shallowcopy, table.slice, table.filter, table.map

References
  1. "Hypericum myrtifolium Lam". ipni.org. International Plant Names Index. Retrieved 2018-11-06.
  2. "Hypericum myrtifolium Lam". Plants of the World Online. Royal Botanical Gardens Kew. Retrieved 2018-11-06.
  3. "Hypericum myrtifolium". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 2018-11-06.
  4. "Hypericum myrtifolium Lam. Descriptions". hypericum.myspecies.info. Retrieved 2018-11-06.
  5. Robson, Norman K. B. (2015). "Hypericum myrtifolium". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). 6. New York and Oxford. Retrieved 2018-11-06 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
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